Type-writing machine.



0. PETBRMANN. TYPE WRITING MACHINE. APPLIOATION FILED MAR. 24, 1911.

Patented Nov. 10, 1914.

W w j.

l/VVENTOR 0. eter/nan 7L ATTORNEYS TS PATENT OFFICE.

'1"].0 PETERMANIN, 0F GRO'TON, NEW YORK, ASSIGNOB. T0 CORONA TYPEWRITER comeany, INCORPORATED, a

TYPE-WRITING MACHINE.

CORPQRATION OF NEW YORK.

Patented Novel), 1914.

Application filed March 24, 1911. Serial no. 616,707.

To all whom it may concern I Be it known that l, OrTo PETERMANN, a citizen of the Republic of Switzerland, and a resident of Groton, county of Tompkins, and State of New York, haye invented certain new and useful improvements in Type- VVriting Machines, of whichthe following is a full, clear, and exact description.

This invention relates more particularly to the work sheet feedmechanism of typewriting machines. I

The primary ob ect.of the invention 1s to provide simple and efficient feeding means which will positively hold the ,work sheet about the platen to cause the ,sheet .to movef with the platen during its line or letter spaC-i ing movements, and t0 brovide means where-, by the work sheet maybe readily and quickly; released to permit thesameto be adjusted} about the platen.

Other objects of the invention are to provide simple and efficient means for support-v ing feed rolls on opposite sides of the longitudinal center of the platen and to yieldingly hold said rolls against theplaten; and to provide simple means whereby the feed rolls may be readily detached from the supporting means. 7

A further object of the invention is to provide simple and efficient mechanism for supporting the feed rolls which may be readily made and assembled and which may be used in connection with various kindsof typewriting machines.

With these and other objects in view, the invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification, and will then be pointed out in the claims at the end of the description.

lln the drawings, Figure .1 is a plan view, partly in section and partly broken away, of one form of carriage embodying my invention. Fig. 2 is an enlarged transverse section. partly in elevation, taken on the line ll- H of Fig. 1'. Fig. 3 is an enlarged transverse section taken on the line III-IH of Fig. 1, looking in the direction opposite to that ofFig. 2; and Fig. 4 is a detail view of a tie element or member for the ball bearing of the carriage.

The invention is shown as,applied to a typewriting machine in which the carriage is adapted to be folded or shifted intoco mpactrelation to another "part eithernachme in order that the machine maybe made more compact for transportation orfor, other purposes, though it will be understoodthat the invention may be applied to typewriting machines of various constructions.

The support may be ofa'foldable or of a fixed character, and mounted on said support is a carriage bed 11 along which the 1 carriage 12 is adapted to travel. Aplaten 13 is held to rotate in suitable bearin s in' the carriage frame and on either or oth ends of the platen shaft is a knob 14 for rotating said platen, andat-the front of-the platen is a feed roll 15 and at the rearof the platen is a second and lar er feed roll 16. "The feed roll 15 has a shat ifiexlending parallel with the platen and tne fru'il 16 a shaft 18 also extending parallel with the platen. Each feed roll has a 'plutiality of roll members 19 which are spaced apartby means ofcollars 20. The roll members may be of rubber or of any other material and are arranged torrotate independently ongthe feed roll shafts,.and the spacin collars20 are also mounted to move in ependently about the shafts. Theshaft 18 atthe rear of the platen is mounted in hook-shaped ends 21 of levers 22. These levers 22am each pivoted at23 to a bracket 24 whichis secured to the carriagebase 25. There are a plurality of supporting means for each feed roll shaft and as many brackets 24 as there aresupporting means. .Eachbracket 24 is substantially L-shaped in form andhas ,a foot 26 projecting from one side thereof and fastened byscrews 27 or otherwise to the carriage base 25, the pivots 23 of the levers 22 being located on the horizontally arranged arms of said brackets. Each lever 22 has an arm 28 one end of which is attached to a spring 29, the other end of. said spring beingattached to an overhanging portion 29 of the bracket, or to a screw 30 held in said portion 29 or in any other desired way. The threadedstem ofthe screw may pass within the spring 29 and by reason of the threads of the screw engaging the spring, the latter may haveits tension varied as the said screw is adjusted. It will be seen that the springs 29 serve to forcethelevers22 on their pivots 23 toward the platen to cause the peripheral surface of -.the -ro1l mem rs 19 to be brought into frictional enga ment therewith and to an extent varymg according to the tension of the springs :A plurality of levers 31- are pivoted at 32 to the horizontally arranged arms of the brackets 24 on the side opposite to the le- ,vq'rs 22, there being a lever 31;for each bra'cket, and each lever has an angular or inclined arm 33, a horizontally extending art 35, and a vertical arm 36, the latter aying an overhanging up er end to which is connected a s ring 3 he spring 37 has one end attache to the arm 36 and its other end held to the foot 26 or otherwise, as desired, and the tendency of said spring is to force the arm 36 downward to cause the roll carried by the set of arms 33 tobemoved ;with its roll in o frictional engagement with fthes urface of he platen 13 to holdthe work v sheet, about the same. By providing the letions to receive the .ro

thegsaid shafts will, be held in the levers vers' 22 and 31 with open hook-shaped or s or shafts 17 an 18,

against removal by the platen. 13, but by removin the platen 13, the said shafts and ,feed rol s may bequickly removed or replaced atwill, The platen may beremoved y the removal of its rod or shaft or othervvi'se, and to emit the arms to directly enage the shats ,17 and 18, the spacing colars" 20, where the supporting levers are located, are: cut-away for art of their circumference, according to t e extent to which the hook-shaped parts engage the shafts.

To permit the feed rolls to hold the work sheet about the platen or to be'oreadily and quickly released therefrom, various means plat "3910f the rod maybe, employed. As shown a transverselyextending rod 38-is provided, and this rod is mounted torotate in the carriage ends and in the brackets,24. This rod is cutaway on; one side to form cam portions 39 and engaging, said camortions are arms or "jlie'v'ers 22.11 Th eirl'ns 33 "of the levers 31 exin' an opposite direction to that of the jsuppoi'ting arm's of thelevers 22, and said levers 31 at the lower edge thereof bear upon the cam surfaces or cut-away portions either direction the cam'portion of the cut-away Par s by engagement with the lfi agaiiist the tension of the springs 29 so that 'fkthei rod 38 isirotated one-fourth or one-hail a revolutiomthe said rolls, will be lield 'in'dis'engaged position, while if the rod 'fiange 43 alon thereof. This ed may have two depressed portions as 44 and 45 formin a channel or bed, in' which to. per

talevt n l s 0; Qrmin a art Of the.

and it will also 38 so' thatby rotating the rod is moved to the position shown inthe drawings, the springs will quickly return the feed rolls into engagement with-thei-platen The I flange 42 along one edge thereof and .a the other edge lengthwise groove 46 lengthwise of the p v is adapted to roll a'pluralit' of balls '47., Two balls are shown and t ese balls" are connected by a spacing or tie element Fig. 4, the said spacing element. being 1n the form of a stra and provided with apertures 49 in which are adapted to the balls 47. The upper surface of the balls are adapted to move in a channel 50 in: the

carriage base 25. directly over the channel 4340f the carria e. bed and alinement ,-the rewith, and said channel may be formed b ressing or forming'two'ribs: 51and52 as a part of the carriage base, the carriage t this construction. p A r01 53 supports the rear part of the carriage and this roll isrotatably held on a stud 54 pro'ecting inward from a flange 55 centrally o the carriage frame, and said roll is of a size relatively larger than the base as? bed being ofsheet metal," as steel,

balls 47, and extends through a slot in the carriage base 25 so as to rest upon the upper surface of the carriage bed 11. The flange 55 of the carriage frame moves under the ,inturned end 56 of a bracket 57 which serves to hold the carriage from movin the bed 11. By means of the rofis 47 and its tie element48 an eii'ective ball bearing for the carriage is provided, and the roll or disk 53 serves as an effective su port and means by which the carriage may e readily moved. lengthwise of its bed.

It will be understood that suitable propelling mechanism is employed for forcing the carriage along) its bed irr one direction, e understood that other features of a typewriting machine are employed, but as they form no part of this invention, they have not been illustrated or described as part of the application.

From the foregoing, it will be seen that simple and eflicient means, is provided for mounting feed rolls on opposite sides of the platen in such a way that the said feed rolls may be quickly released or caused to engage the platen; that simple means is provided whereby the feed rolls may be removed or others placed in their stead; that simple means 1s provided for supporting and for operating the supporting means to release thefeed rolls from engagement with; the platen; and that the mechanism disclosed is away from t sim la in construction and may be readily ma e and applied to various kinds of typewriting machines.

Having thus described my invention, '1 claim as new and desire to -secure by Letters Patent 1. In a typewriting machine, the COlllblllflr tion of a support,'a carriage adapted to move along said support, a platen mounted in the carriage, a plurality of independent L-shaped brackets secured to the carriage, oppositely extending levers pivotally held to opposite sides of each bracket and having hooked ends, one of said levers of each bracket having a short engaging arm projecting outward therefrom, shafts detachably supported in the hooked ends of said levers, rolls rotatably held on said shafts, a spring for each lever tending normally to force the shafts supporting end toward the ,platen. and a rod having cam portions adapted to engage all of said levers and to simultaneously force the levers Lin a'direction against the tension of thesprings and in opposite directions to move the rolls away from the platen.

In a typewriting machine, the combination of a support, a carriage adapted to move along said support, a platen mounted in the carriage, a plurality of independent brackets secured to the carriage, oppositely extending levers pivotally held to each bracket on opposite sides thereof and having hooked ends, rods supported in the ends of said levers, rolls held on said rods, a spring for each lever tending normally to force the shaft supporting end toward the platen. said springs being vertically arranged and secured to tlfe levers and to-the bracket, and means adapted to engage an of said levers and to simultaneously force the levers in a direction against the tension of the springs and in opposite directions to move the rolls away from the platen.

In a typewriting machine, the combination of a support, a carriage having a base adapted to move along said support, a platen mounted in the carriage over the base, a plurality of independent substantially L-shaped brackets secured to the carriage base transversely thereof, oppositely extending levers pivotally held to each bracket on opposite sides thereof and having hooked ends, one of said levers of each bracket having a short engaging arm projecting outward therefrom, shafts detachably supported in the ends of said levers, spaced rolls rotatably held on said shafts, the rolls of one shaft being relatively larger than those of the other shaft, means tending normally to force the shaft supporting end of the levers toward the platen, and means adapted to engage all of said levers and to simultaneously force the levers to move the rolls away from the platen.

4. In a typewriting machine, thecombination. of a support, a carriage adapted to move along said support, a platen mounted in-thei carriage, a plurality of independent brackets secured to the carriage, transversely thereof and extending under and to the rear of the platen, oppositely extending levers pivotally heldto each bracket on opposite sides thereof, shafts/supported in the ends of said levers, spaced rolls held on said shafts, means tending normally to force the rolls toward the platen, and means for forcing the rolls away from the platen,

5. In a typewriting machine, the combination of a support, a carriage adapted to move along said support, a platen mounted in the carriage, a plurality of independent and substantially L-shaped brackets secured to the carriage, transversely thereof and having a part extending vertically at the rear thereof, oppositely extending levers pivot-ally held to each bracket on opposite sides thereof and having hooked ends, shafts detachably supported in the ends of said levers, spaced rolls rotatabl'y held on said shaft-s, a spring for each lever located at the rear of the platen and secured at one end to the lever and at its other end to the bracket to which the lever is pivoted and tending normally to force the rolls toward the platen, and means adapted to engage all of said levers and to simultaneously force the levers in a direction against the tension of the springs and in opposite directions to move the rolls away from the platen.

In a typewriting machine, the combination of a support, a platen, a plurality of L-shaped brackets secured to the support, two oppositely extending levers pivotally held to each bracket and having hooked ends, shafts supported in the ends of said levers, roll members movable independent of said shafts, means for yieldingly forcing the levers in one direction, and a rod having cam portions for simultaneously forcing the,

levers in opposite directions to disengage the rolls from the platen.

7 In a typewriting machine, the combination of a carriage, a platen, a plurality of L-shaped brackets secured to the carriage, two oppositely extending lever-s pivotally held to each bracket and having hooked ends, feed rolls supported in the ends of said levers on-opposite sides of the platen and arranged parallel therewith, springs for yieldingly forcing the levers in one direction, and a rotary rod having cam portions for simultaneously forcing the levers 1n opposite directions against the tension of the springs. I

8, In a typewriting machine, the combination of a carriage having a base, a platen mounted in the carriage over the base, a plurality of independent L-shaped brackets held to the base, a set of levers pivotally held to each bracket and extending on op posite sides of the center of the platen, sprlngs held to the brackets and to the levers and tending normally to force the levers in 5 one direction, feed rolls mounted in said levers on opposite sides of the platen and in parallel relation thereto, and means for disengaging the feed rolls from the platen.

9. n a typewritingmachine, a carria e m'havlng a base, a platen mounted in sa1d carriage over the base, a plurality of independent brackets secured to the carriage base, a set of levers pivotally mounted on v ca of this patent may be obtained for five cents each, by addressing the Washington, D. 0.

each bracket, feed rolls detachably mounted I in the levers, independent -sprin held to l vthe brackets and to the levers an normally F. J. HOWELL, Ferm- LAsTnR.

Commissioner of Patents. 

